GAS Downpipe Set, B8/B8.5 S4/S5/Q5/SQ5 3.0T Supercharged

Stock downpipes are small, restrictive, and prone to flex joint and resonator failure. 

Our high-flow downpipes are built completely with T304 stainless steel for high strength, corrosion resistance, and longevity. These downpipes remove the small front resonators (sometimes mistaken for secondary cats), allowing your engine to breathe through larger 2.5" piping and smooth transitions. In addition to improved sound, expect power gains as high as 15HP to the wheels depending on tuning and hardware.

Features:

• Improved sound
• Increased engine response
• Power increase of 10-12 HP on an otherwise stock vehicle
• V-band connections for strength & adjustability
• Full T304 stainless steel construction
• Hand TIG-welded and back-purged
• Interlock flex joints for unparalleled durability and fewer flex joint failures
• Tailored fitment for increased ground clearance on lowered cars
• Will not cause a check engine light
• Works well with both tuned and factory cars - a great replacement option for your rattling pre-resonators or blown-out flex joints

Includes:

• GAS 2.5" Downpipe Set
• OEM downpipe gaskets
• Full 10.9 hardware set
• Sleeve clamps are not included

While you're in there:

• Downpipe Sleeve Clamp Set
• GAS Exhaust Tunnel Brace

V-band connections are compatible with our catted or resonated rear section. If you have purchased our downpipes already and would like to upgrade to catted/non-catted or resonated rear sections you can find them at a discounted price here.

C7 A6/A7 Downpipes can be found here!